EASY

JEE Main

IMPORTANT

Earn 100

Two black bodies $A$ and $B$ have equal surface areas and are maintained at temperatures $27 ° C$ and $177 ° C$ , respectively. What will be the ratio of the thermal energy radiated per second by $A$ to that by $B$ ?

50% studentsanswered this correctly

Important Questions on Thermometry, Thermal Expansion and Kinetic Theory of Gases

EASY

JEE Main

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 14 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Objective Problems>Q 1

The absolute zero temperature in Fahrenheit scale is

EASY

JEE Main

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 14 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Objective Problems>Q 2

A faulty thermometer has its fixed points marked

5

and

95 .

If the temperature of a body as shown on the Celsius scale is

40,

then its temperature shown on this faulty thermometer is

EASY

JEE Main

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 14 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Objective Problems>Q 3

A steel rod of diameter

1 cm

is clamped firmly at each end when its temperature is

25 ° C

so that it cannot contract on cooling. The tension in the rod at

0 ° C

is approximately

(α = 10^{- 5} ° C^{- 1}, Y = 2 \times 10^{11} N m^{- 2})

EASY

JEE Main

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 14 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Objective Problems>Q 4

The temperature of a physical pendulum whose time period is

T

is raised by

Δ θ

. The change in its time period is,

EASY

JEE Main

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 14 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Objective Problems>Q 5

On heating, a liquid having coefficient of volume expansion

α

in a container having coefficient of linear expansion

\frac{α}{2}

, the level of the liquid in the container would,

EASY

JEE Main

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 14 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Objective Problems>Q 6

Two rods of lengths

l_{1}

and

l_{2}

are made of materials whose coefficient of linear expansions are

α_{1}

and

α_{2}

, respectively. If the difference between two lengths is independent of temperature, then,

EASY

JEE Main

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 14 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Objective Problems>Q 7

If two rods of lengths

L

and

2 L

having coefficient of linear expansion

α

and

2 α

, respectively, are connected end-on-end, the average coefficient of linear expansion of the composite rod equals,

EASY

JEE Main

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 14 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Objective Problems>Q 8

A solid ball of metal has a spherical cavity inside it. If the ball is heated, the volume of the cavity will,

Two black bodies A and B have equal surface areas and are maintained at temperatures 27 °C and 177 °C, respectively. What will be the ratio of the thermal energy radiated per second by A to that by B?

Important Questions on Thermometry, Thermal Expansion and Kinetic Theory of Gases

Learn and Prepare for any exam you want !

Two black bodies $A$ and $B$ have equal surface areas and are maintained at temperatures $27 ° C$ and $177 ° C$ , respectively. What will be the ratio of the thermal energy radiated per second by $A$ to that by $B$ ?